Respuesta :

[tex]y+3=-x+1[/tex]

Explanation

Step 1

Let

P1(1,-3)

slope=-1

Step 2

use the formula

[tex]y-y_1=m(x-x_1)[/tex]

replacing

[tex]\begin{gathered} y-y_1=m(x-x_1) \\ y-(-3)=-1(x-1) \\ y+3=-x+1 \\ \text{subtract 3 in both sides} \\ y+3-3=-x+1-3 \\ y=-x-2 \end{gathered}[/tex]

I hope this helps you